var_dump() is debugging functionality, so it should print
floating-point numbers accurately. We do this by switching
to serialize_precision, which (by default) will print with
as much precision as necessary to preserve the exact value
of the float.
This also affects debug_zval_dump().
Closes GH-5172.
uasort, uksort and usort.
Corrected prototype comments for all.
Converted to use zend_parse_parameters, except for the u.?sort functions.
Changed return values for failure from implicit NULL to explicit FALSE in
asort(), krsort(), and ksort().
Changed pval to zval in the u.?sort functions.
Added test to help ensure that fixes to code do not change function
behavior. Tests are quite large (~237k) but compress down to ~16k.
Please let me know if this is a problem!
